Arduino通过ESP8266模块发送数据到ONENET云服务器（HTTP）_esp8266向onenet发送数据

1、具体操作

具体操作参考这篇文章，非常好用！但是注意最下面的postData（）函数中，url中还要改成自己的设备id。

(1条消息) arduino通过esp8266模块发送数据到云服务器_arduino esp8266 上传数据_代码小白101的博客-CSDN博客

2、代码修改

由于我的传感器数据比较多（6个），所以在使用次代码时出现了上传失败的问题，于是我把6个数据拆成了3次发送，代码如下：

主要修改了updateTemp()函数、postData()函数。

#include <stdlib.h>
#include <SoftwareSerial.h>
 
#define SSID "VIVO X27"      //wifi名
#define PASS "l123321000" //wifi密码
#define IP "api.heclouds.com" // 连接thingspeak.com服务器
 
const char OneNetServer[] = "api.heclouds.com";
//String GET = "GET /update?key=ylZJctZfVULDM4NvVRfec97Axxw="; //输入前面记下的API
const char APIKEY[] = "Zxc7y94ESpWDm=uu310H8CHWlME="; 
int32_t DeviceId = 1062145212;                     
const char DS_ax[] = "ax";
const char DS_ay[] = "ay";
const char DS_az[] = "az";
const char DS_press[] = "F";
const char DS_temp[] = "C";
const char DS_v[] = "V";
SoftwareSerial ESP8266(8, 9); // 定义软串口
const int tcpPort = 80;
//初始化-----------------------------------------
void setup()
{
  ESP8266.begin(115200);
  Serial.begin(115200);
  ESP8266.println("AT");//指令测试
  delay(1000);
  if (ESP8266.find("OK"))  //接收指令正常则返回OK
  {
    Serial.println("Wifi module connection is normal");
    connectWiFi();
  }
  else {
    Serial.println("Wifi module connection failed");
  }
}
 
//主循环-----------------------------------------
void loop()
{
  //Serial.println((float)DHT11.temperature);
  //Serial.println((float)DHT11.humidity);
  float ax= 111.11;
  float ay = 222.22;
  float az = 333.33;
  float press = 444.44;
  float temp = 555.55;
  float v = 666.66;
  char buffer[10];
  String ax_str = dtostrf(ax, 4, 2, buffer);
  String ay_str = dtostrf(ay, 4, 2, buffer);
  String az_str = dtostrf(az, 4, 2, buffer);
  String press_str = dtostrf(press, 4, 2, buffer);
  String temp_str = dtostrf(temp, 4, 2, buffer);
  String v_str = dtostrf(v, 4, 2, buffer);
  updateTemp( 1,ax_str, ay_str);
  updateTemp( 2,az_str, press_str);
  updateTemp( 3, temp_str, v_str);
  delay(10);
}
 
 
void updateTemp(int a,String data1, String data2)
{
  String cmd = "AT+CIPSTART=\"TCP\",\"";
  cmd += IP;
  cmd += "\",80";
  //sendDebug(cmd);                        //发送指令，链接服务器
  ESP8266.println(cmd);
  delay(500);
  if (ESP8266.find("Error"))
  {
    Serial.print("Connection to server failed");
    return;
  }
  //cmd = GET + "&field1=" + temph + "&field2=" + tempt + "\r\n";       //记录T和H的值
  cmd = postData(DeviceId, a, data1, data2);
  ESP8266.print("AT+CIPSEND=");
  ESP8266.println(cmd.length());
  if (ESP8266.find(">"))
  {
    Serial.print(">");
    ESP8266.print(cmd);
    Serial.print(cmd);
  }
  else
  {
    Serial.println("Data transmission failure");
  }
  if (ESP8266.find("OK"))
  {
    Serial.println("RECEIVED: OK");
    ESP8266.println("AT+CIPCLOSE");
  }
  else
  {
    Serial.println("Data transmission failure");
  }
}
 
boolean connectWiFi()
{
  //Serial.println("AT+CIPMUX=0");
  ESP8266.println("AT+CWMODE=1");
  ESP8266.println("AT+RST");
  delay(2000);
  String cmd = "AT+CWJAP=\"";
  cmd += SSID;
  cmd += "\",\"";
  cmd += PASS;
  cmd += "\"";
  ESP8266.println(cmd);
  delay(1000);
  if (ESP8266.find("OK"))
  {
    Serial.println("Wifi connection successful");
    return true;
  } else
  {
    Serial.println("Wifi connection failed");
    return false;
  }
}
 
String postData(int dId,int a, String data1, String data2)
{
    // 创建发送请求的URL -- We now create a URI for the request
    String url = "/devices/1062145212";//此处修改为你的设备id
    //url += String(dId);
    url += "/datapoints?type=3";  
    String data;         
    if(a==1){
    data = "{\"" +
            String(DS_ax) + "\":" + data1 + ",\"" +
            String(DS_ay) + "\":" + data2 + "}";}
    else if(a==2){
    data = "{\"" +
            String(DS_az) + "\":" + data1 + ",\"" +
            String(DS_press) + "\":" +data2 + "}";}
    if(a==3){
    data = "{\"" +
            String(DS_temp) + "\":" + data1 + ",\"" +
            String(DS_v) + "\":" + data2 + "}";}
 
    // 创建发送指令 -- We now combine the request to the server
    String post_data = "POST " + url + " HTTP/1.1\r\n" +
                       "api-key:" + APIKEY + "\r\n" +
                       "Host:" + OneNetServer + "\r\n" +
                       "Content-Length: " + String(data.length()) + "\r\n" +                     //发送数据长度
                       "Connection: close\r\n\r\n" +
                       data;
    return post_data;
}

如果有错误的或者让大家有更好地方法，欢迎下方评论留言！